package com.zhm.springcloud.filter;

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.util.Date;

/**
 * Date： 2021/3/13 21:59
 *
 * @author ZHM
 */
@Component
@Slf4j
public class MyLogGlobalGatewayFilter implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        log.info("**********come in MyLogGateWayFilter: " + new Date());
        String uname = exchange.getRequest().getQueryParams().getFirst("uname");
        if (uname == null) {
            log.info("*******用户名为null，非法用户，0(τ_ _π)o");
            exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
            return exchange.getResponse().setComplete();
        }
        return chain.filter(exchange);
    }

    /**
     * 返回当前优先级顺序 ，数字越小 排序越前面
     *
     * @return
     */
    @Override
    public int getOrder() {
        return 0;
    }
}
